Add failing acceptance test for nice 410 page
Copy 410 template from redirector and render it raw
Add failing acceptance test for ERB-rendered 410 page
Strip out PHP from 410 template

This gets the template ready for rendering by ERB.
Render 410 template with ERB
Update asset URLs in 410 template
Expose friendly URL to 410 template
Expose request URI to 410 template
Create suggested link and expose it to 410 template
Expose archive URL to 410 template